Internal combustion engine



arch 3', 1936. w. HAUL 2,032,985

INTERNAL COMBUSTION ENGINE Filed Oct. 31, 1953 5 Sheets-Sheet l Inventorflllorney March 3, 1936. w. HAUL INTERNAL COMBUSTION ENGINE Filed Oct.51, 1935 5 Sheets-Sheet 2 V Inventor wzzzz'am Haul v fllomey March 3,1936. w AUL 2,032,985

INTERNAL COMBUSTION ENGINE Filed Oct. 31, 1933 5 Sheets-Sheet 3 gaooo Invenl or March 3, 1936.

W. HAUL INTERNAL COMBUSTION ENGINE Filed Oct. 31, 1933 5 Sheets$heet 4Inventor VViZZL'arh, Haul flllorney March 3, 1936. w HAUL INTERNALCOMBUSTION ENGINE Filed Oct. 31, 1953 5 Sheets-Sheet 5 Invenlor flllomeyWilliam Haul Patented Mar. 3, 1936 UNITED STTES PATENT OFFICE 1 Claim.

This invention appertains to new and useful improvements in internalcombustion engines, and more particularly to an engine of the two cycletype.

The principal object of the present invention is to provide an internalcombustion engine in which the valves are simplified and wherein theexplosion chamber is scavenged thoroughly and quickly.

During the course of the following specification and claim, variousimportant objects and advantages of the invention will become apparentto the reader.

In the drawings:-

Figure 1 represents a side elevational view of the engine.

Figure 2 represents a top plan view of the engine.

Figure 3 represents a vertical sectional view through the engine.

Figure 4 represents a horizontal sectional view taken substantially online 4-4 of Figure 3.

Figure 5 represents a sectional view taken substantially on line 55 ofFigure 3.

Figure 6 represents a side elevational view of the combined piston andvalve.

Figure 7 represents a top plan View of the cylinder and valvecombination.

Figure 8 represents a top plan view of the engine with the head removed.

Figure 9 represents a sectional view taken substantially on line 99 ofFigure 3.

Figure 10 represents a horizontal sectional View taken substantially online IIlIIJ of Figure 3.

Referring to the drawings wherein numerals designate like parts, it canbe seen that numeral 5 represents a two-cylinder block having a waterjacket 6. Below this is located a crank case I through which the crankshaft 8 extends. Numeral 9 represents the head which is hollow toaccommodate water of the cooling system, and extending verticallythrough the head 9 are the barrels II] to accommodate the valve sleevesI I on the pistons I2 which operate in the cylinders I3. Each of thetubular valves II extends upwardly from the central portion of thepiston head and is partitioned off just above the piston I2, as at I3,so that the fuel supply is entirely out 01f when the partition is in theposi-, tion as shown in Figure 3 above the engine head. The fuel iscompressed in the valve II on the up stroke of the piston and when thepiston is at the lower portion of its power stroke, fuel is admitted tothe valve II. The valve sleeve II is provided with perforations I4 inthe side thereof just above the partition I3, and with an inlet port Iladjacent its upper end, while depending into the valve sleeve I I is thetubular core I5 which is flanged at its upper end and secured by boltsI6 to the upper portion of the head 9. Be- 5 tween the upper end of thecore I5 and the upper end of the valve sleeve II is a lubricant pocketI'I.

Numeral I8 represents a fuel duct leading through the head for each ofthe valves II and 10 each of these fuel ducts opens through the innerface of the corresponding barrel I0. Within each of the explosionchambers I9 are the points of a spark plug 20. The piston I2 is hollowand has oil drain openings 2I therein at its lower portion, as shown inFigure 3. The piston I2 is provided with a small cylindrical skirt 22which operates within the tubular guide 23 depending from the cylinderblock 5. The space between the cylinder bore and the apron 22 defines anair chamber 24. Each of the cylinders has an air intake line 25 with anoutwardly closing check valve 26 therein. Each of these air lines 25opens into the corresponding air chamber 24 below the piston and bymeans of these 25 air lines 26, a duct 21 extends upwardly tocommunicate with the cylinder at a point adjacent the upper end of thecylinder and a point which is never below the lower portion of thepiston I2.

As is clearly shown in Figure 3, these ducts 21 are connected by a pipe28.

The pistons I2 are connected by a connecting rod 29 to the crank 30 ofthe shaft 8. Numeral 3I denotes an exhaust opening for each of thecylinders and is substantially on the same horizontal plane as the upperopenings of the ducts 21.

In the operation of the engine, it can be seen in Figure 3 that thepiston I2 is starting downwardly on its explosion stroke. As the pistonmoves downwardly, air is being compressed in the chamber 24 and it willbe noted that this air cannot escape due to the fact that the duct 21 isclosed by the piston I2 and the air inlet 25 is closed by the checkvalve 26. When the piston moves to its lowermost position, the upper endof the duct 21 is exposed so that the compressed air sweeps across theexplosion chamber and scavenges the cylinder by way of the exhaust port3I. Immediately subsequent to this, the port II in registering with theinlet port I8 will permit fuel to pass downwardly through the sleeve IIby way of the opening I4 to the explosion chamber, and as the pistonmoves upwardly, the fuel inlet will be closed and the gas caught in theexplosion chamber will be compressed by the uprising of the piston. Atthe same time, the piston I2 is creating a suction in the chamber 24which sucks air through the check valve 26, and when the compressed fuelis ignited, the same operation repeats itself.

While the foregoing specification sets forth the invention in specificterms, it is to be understood that numerous changes in the shape, sizeand materials may be resorted to without departing from the spirit andscope of the invention as claimed hereinafter.

Having described the invention, what is claimed as new is In an internalcombustion engine, a cylinder, a piston operative in the cylinder, acylinder head, said cylinder head provided with a barrel extendingvertically thereon, a valve sleeve extending upwardly from the pistonand into the barrel, said valve sleeve having a partition thereinextending transversely thereof and openings in the sleeve above thepartition, a fuel inlet in the said head communicating with said barrel,and a closure secured to the said barrel and provided with a tubularmember depending therefrom protruding into the upper portion of thevalve sleeve, said valve sleeve being provided with a fuel. inlet portin the upper end portion thereof registrable with the fuel inlet in thehead when the piston reaches its lowermost position, said dependingmember and barrel defining a snug guide for the valve sleeve.

WILLIAM HAUL.

